<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <script crossorigin src="https://unpkg.zhimg.com/react@18/umd/react.production.min.js"></script>
  <script crossorigin src="https://unpkg.zhimg.com/react-dom@18/umd/react-dom.production.min.js"></script>
  <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
  <title>demo5</title>
</head>

<body>
  <div id="root"></div>
  <script type="text/babel">
    const rootElement = document.getElementById("root"); const root = ReactDOM.createRoot(rootElement); const ele =
    <div className="Hello" id="demo5">Hello world</div>
    root.render(ele); const myHello = <span>Hello 666 </span>; const Myname = <span>mYName</span>; const dispaly = 'flex'; const flexDirection = 'column'; const ele2 = (
    <div className="Hello66" id="demo5" style={{ dispaly, flexDirection }}>
      {myHello} {Myname}
    </div>); root.render(ele2);
  </script>
</body>

</html>